Plot.plot({
aspectRatio: 1,
x: {label: "Age (years)"},
y: {
grid: true,
label: "← Women · Men →",
labelAnchor: "center",
tickFormat: Math.abs
},
marks: [
Plot.dot(
congress,
Plot.stackY2({
x: (d) => 2023 - d.birthday.getUTCFullYear(),
y: (d) => d.gender === "M" ? 1 : -1,
fill: "gender",
title: "full_name"
})
),
Plot.ruleY([0])
]
})